Progress Cargo Ship Launches to Space Station

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The Russian Progress 51 cargo craft launched from the Baikonur Cosmodrome in Kazakhstan April 24, at 12:12 UTC (6:12 am EDT) and is on its way to the International Space Station. Unlike its three predecessors, Progress 51 will take the typical two-day rendezvous instead of the new 6-hour

fast-track

to reach the ISS. This is because of the phasing and orbital mechanics associated with this launch date. The unpiloted Progress is scheduled to dock to the aft port of the station's Zvezda Service Module on April 26; however a problem arose when a rendezvous antenna did not deploy, which may affect the docking.

The Progress made it safely to orbit and deployed its solar arrays as planned. But one of the five sets of KURS automated rendezvous antennas used as navigational aids did not deploy. Russian ground controllers are assessing the antenna, which is used to measure orientation of the Progress vehicle, and how to troubleshoot the problem. We'll keep you posted if the docking time changes.

On board are more than three tons of food, fuel, supplies and experiment hardware for the ISS Expedition 35 crew.

Nancy Atkinson

Nancy Atkinson

Nancy Atkinson is a space journalist and author with a passion for telling the stories of people involved in space exploration and astronomy. She is currently retired from daily writing, but worked at Universe Today for 20 years as a writer and editor. She also contributed articles to The Planetary Society, Ad Astra (National Space Society), New Scientist and many other online outlets.

Her 2019 book, "Eight Years to the Moon: The History of the Apollo Missions,” shares the untold stories of engineers and scientists who worked behind the scenes to make the Apollo program so successful, despite the daunting odds against it. Her first book “Incredible Stories From Space: A Behind-the-Scenes Look at the Missions Changing Our View of the Cosmos” (2016) tells the stories of 37 scientists and engineers that work on several current NASA robotic missions to explore the solar system and beyond.

Nancy is also a NASA/JPL Solar System Ambassador, and through this program, she has the opportunity to share her passion of space and astronomy with children and adults through presentations and programs. Nancy's personal website is nancyatkinson.com